Graphites G31 | Petrographic Atlas | SIU

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Crelling's Petrographic Atlas of Coals and Carbons

College of Science

G31

g31

Frame ID: G31

Sample ID: Graphite

Magnification: As given

Illuminator: Vertical

Objective: 25x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter: None

Important Features: Baked graphite electrode

High Res image (300 dpi)

Description: This frame shows a typical baked electrode with petroleum coke fragments (large pieces of needle coke). Note the parallel cracks along the long axis of the coke particles and the good bonding on the end of the same particles.